use swaylock instead of ly on boot up

config/sway/config

@@ -115,6 +115,9 @@ mode "resize" {
 }
 bindsym $mod+r mode "resize"
 
+# Autologin via greetd (hosts/la2410/configuration.nix) -- this lock is the login.
+exec swaylock -e -c 000000
+
 exec {
 	waybar
 	kanshi

hosts/la2410/configuration.nix

@@ -272,18 +272,21 @@ pulse.enable = true;
 };
 
 
-services.displayManager.ly = {
+# Boot straight into sway as shihaam; sway locks itself on startup (see the
+# swaylock exec in config/sway/config), so the swaylock password is the login.
+# initial_session only fires once per boot -- after logging out of sway,
+# greetd falls back to default_session, a normal tuigreet login.
+services.greetd = {
   enable = true;
   settings = {
-#    auto_login_user = "shihaam";
-#    auto_login_session = "sway";
-#    auto_login_service = "ly-autologin";
-    animation = "matrix";
-    bigclock = "en";
-    asterisk = null; 
-    battery_id = "BAT0";
-    brightness_up_cmd = "${pkgs.brightnessctl}/bin/brightnessctl -q -n s +10%";
-    brightness_down_cmd = "${pkgs.brightnessctl}/bin/brightnessctl -q -n s 10%-";
+    initial_session = {
+      command = "sway";
+      user = "shihaam";
+    };
+    default_session = {
+      command = "${pkgs.tuigreet}/bin/tuigreet --time --asterisks --cmd sway";
+      user = "greeter";
+    };
   };
 };
 #boot.kernelModules = [ "i2c-dev" ];